Meeting in Houston Comes Days After Workers Rejected Attempt to Organize

Labor leaders are gathering in Houston this week to plot out their strategy for the year, but much of their focus will be almost 700 miles away, in Chattanooga, Tenn., where workers on Friday rejected the United Auto Workers attempt to organize under the union's label at a Volkswagen plant.

Union leaders over the weekend voiced outrage about an anti-union campaign led by Republican Sen. Bob Corker, other Tennessee Republicans, and conservative lobbyists, blaming them for the defeat. But labor officials will also be...